Hourly Weather Forecast for Oceanside, California

Hourly Weather | Today › Tuesday, August 25, 2026

Active Weather Warnings

Extreme Heat Watch
Heat Advisory

Oceanside, California

4 AM

68°

Feels Like 70°

Humidity: 90%

UV Index: 0

Wind: 2 mph

5 AM

66°

Feels Like 66°

Humidity: 94%

UV Index: 0

Wind: 2 mph

6 AM

66°

Feels Like 68°

Humidity: 90%

UV Index: 0

Wind: 2 mph

7 AM

70°

Feels Like 72°

Humidity: 88%

UV Index: 1

Wind: 2 mph

8 AM

73°

Feels Like 79°

Humidity: 84%

UV Index: 2

Wind: 2 mph

9 AM

75°

Feels Like 84°

Humidity: 77%

UV Index: 3

Wind: 4 mph

10 AM

79°

Feels Like 86°

Humidity: 69%

UV Index: 4

Wind: 7 mph

11 AM

81°

Feels Like 90°

Humidity: 63%

UV Index: 6

Wind: 8 mph

12 PM

82°

Feels Like 91°

Humidity: 61%

UV Index: 8

Wind: 9 mph

1 PM

82°

Feels Like 91°

Humidity: 60%

UV Index: 9

Wind: 10 mph

2 PM

84°

Feels Like 91°

Humidity: 57%

UV Index: 8

Wind: 10 mph

3 PM

84°

Feels Like 90°

Humidity: 60%

UV Index: 6

Wind: 10 mph

4 PM

82°

Feels Like 88°

Humidity: 59%

UV Index: 4

Wind: 10 mph

5 PM

81°

Feels Like 82°

Humidity: 59%

UV Index: 3

Wind: 9 mph

6 PM

79°

Feels Like 81°

Humidity: 65%

UV Index: 2

Wind: 8 mph

7 PM

77°

Feels Like 79°

Humidity: 71%

UV Index: 1

Wind: 7 mph

8 PM

73°

Feels Like 75°

Humidity: 77%

UV Index: 0

Wind: 5 mph

9 PM

73°

Feels Like 73°

Humidity: 80%

UV Index: 0

Wind: 4 mph

10 PM

72°

Feels Like 73°

Humidity: 83%

UV Index: 0

Wind: 4 mph

11 PM

70°

Feels Like 73°

Humidity: 89%

UV Index: 0

Wind: 2 mph

Hourly Air Quality Forecast - AQI (US EPA)

4 AM

51 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 12.49 µg/m³
PM₁₀: 25.67 µg/m³
O₃: 0.034 ppm
NO₂: 0.3 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 AM

48 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.44 µg/m³
PM₁₀: 24.63 µg/m³
O₃: 0.034 ppm
NO₂: 0.4 ppb
SO₂: 0.2 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 AM

44 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 10.66 µg/m³
PM₁₀: 23.91 µg/m³
O₃: 0.034 ppm
NO₂: 0.4 ppb
SO₂: 0.2 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 AM

42 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 10.01 µg/m³
PM₁₀: 23.41 µg/m³
O₃: 0.034 ppm
NO₂: 0.4 ppb
SO₂: 0.2 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 AM

40 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 9.51 µg/m³
PM₁₀: 23 µg/m³
O₃: 0.034 ppm
NO₂: 0.4 ppb
SO₂: 0.2 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 AM

39 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 9.38 µg/m³
PM₁₀: 22.97 µg/m³
O₃: 0.035 ppm
NO₂: 0.4 ppb
SO₂: 0.2 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM

41 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 9.78 µg/m³
PM₁₀: 23.67 µg/m³
O₃: 0.036 ppm
NO₂: 0.3 ppb
SO₂: 0.2 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM

46 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.13 µg/m³
PM₁₀: 25.55 µg/m³
O₃: 0.037 ppm
NO₂: 0.3 ppb
SO₂: 0.2 ppb
CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM

54 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 13.96 µg/m³
PM₁₀: 29.05 µg/m³
O₃: 0.039 ppm
NO₂: 0.2 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

1 PM

64 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 18.51 µg/m³
PM₁₀: 34.43 µg/m³
O₃: 0.040 ppm
NO₂: 0.2 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 PM

76 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 24.38 µg/m³
PM₁₀: 41.2 µg/m³
O₃: 0.041 ppm
NO₂: 0.2 ppb
SO₂: 0.2 ppb
CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM

90 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 30.86 µg/m³
PM₁₀: 48.52 µg/m³
O₃: 0.042 ppm
NO₂: 0.2 ppb
SO₂: 0.2 ppb
CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM

100 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 35.47 µg/m³
PM₁₀: 53.64 µg/m³
O₃: 0.043 ppm
NO₂: 0.2 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM

103 AQI

Unhealthy air quality for sensitive groups Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 36.73 µg/m³
PM₁₀: 55.19 µg/m³
O₃: 0.043 ppm
NO₂: 0.2 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

6 PM

100 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 35.29 µg/m³
PM₁₀: 53.67 µg/m³
O₃: 0.043 ppm
NO₂: 0.3 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM

94 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 32.64 µg/m³
PM₁₀: 50.49 µg/m³
O₃: 0.043 ppm
NO₂: 0.3 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM

88 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 29.71 µg/m³
PM₁₀: 46.84 µg/m³
O₃: 0.042 ppm
NO₂: 0.4 ppb
SO₂: 0.2 ppb
CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM

83 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 27.4 µg/m³
PM₁₀: 43.73 µg/m³
O₃: 0.042 ppm
NO₂: 0.4 ppb
SO₂: 0.2 ppb
CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM

78 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 25.06 µg/m³
PM₁₀: 40.8 µg/m³
O₃: 0.041 ppm
NO₂: 0.3 ppb
SO₂: 0.2 ppb
CO: 0.10 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 PM

72 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 22.24 µg/m³
PM₁₀: 37.63 µg/m³
O₃: 0.041 ppm
NO₂: 0.3 ppb
SO₂: 0.2 ppb
CO: 0.10 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Oceanside

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued August 22 at 1:10PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

Aug 25, 10:00 AM → Aug 28, 8:00 PM

WHAT: Dangerously hot conditions with high temperatures reaching
the upper 80s to low 90s with limited overnight cooling.

WHERE: Orange County Coastal Areas and San Diego County Coastal
Areas.

WHEN: From Tuesday morning through Friday evening.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events.

ADDITIONAL DETAILS: The combination of hot daytime temperatures
with overnight temperatures struggling to drop below the lower 70s
will especially affect those without access to air conditioning.

+ Read More

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Updated: Aug 22, 5:12 PM Source: NWS Alert

Moderate Expected Likely

Heat Advisory

Heat Advisory issued August 24 at 10:04PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

Aug 25, 10:00 AM → Aug 28, 8:00 PM

WHAT: High temperatures in the mid 80s near the beaches to the
lower to mid 90s for the mesas and other higher coastal terrain
expected.

WHERE: San Diego County Coastal Areas County.

WHEN: From 10 AM Tuesday to 8 PM PDT Friday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events. Hot temperatures may cause heat illnesses.

+ Read More

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Updated: Aug 25, 2:40 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Weather Alerts and Warnings for Oceanside

Extreme Heat Watch

Heat Advisory

Explore U.S. Weather Trends